/*
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 * and open the template in the editor.
 */

package action;

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.MultipartConfig;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.Part;

/**
 *
 * @author Benny
 */
@MultipartConfig
@WebServlet(name = "UploadServlet", urlPatterns = {"/UploadServlet"})
public class UploadServlet extends HttpServlet {

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        try (PrintWriter out = response.getWriter()) {
            /* TODO output your page here. You may use following sample code. */
            out.println("<!DOCTYPE html>");
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet UploadServlet</title>");            
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Servlet UploadServlet at 上傳完成" + request.getContextPath() + "</h1>");
            out.println("</body>");
            out.println("</html>");
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        //processRequest(request, response)
        Part p=request.getPart("doc");
        String des =request.getParameter("des");
        System.out.println("des:"+des);
        Part p2 =request.getPart("des");
        System.out.println(p.getName());
        System.out.println(p2.getName());
        System.out.println(p.getContentType());
        System.out.println(p2.getContentType());
        String filename =p.getHeader("Content-Disposition");
        int beginIndex =filename.indexOf("filename=\"");
        int endIndex =filename.lastIndexOf("\"");
        filename =filename.substring(beginIndex+10, endIndex);
        System.out.println(filename);
        InputStream pin =p.getInputStream();
        FileOutputStream fout =new FileOutputStream("C:/Users/Benny/Documents/File/" + filename);
        byte ary[] =new byte[1024];
        int length =-1;
        while( (length = pin.read(ary))!=-1)
            fout.write(ary, 0, length);
        pin.close();
        fout.close();
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
